I'm a non-verbal autistic and needed an AAC application. Since I'm a developer, I thought I could do better than everyone else. ;)
The application is also open sourced, at https://github.com/nahratzah/speaker_phone (feel free to contribute, fork or report bugs/recommend improvements).
This is a free app, with no advertisements, and developed in my spare time. <3
9Apps 4.9
